In short: if you are reading this review to decide whether to book this place, you can't go wrong with it. It's a great place to stay and Alex is the best host you'll ever have.
Longer version: I've been using Airbnb a lot over the past couple of years and this is by far the best experience I've ever had. The place itself is clean, well-equipped and overall a great place for both short and long term stay. The neighborhood is amazing, so many different local shops and food stalls nearby. The location is perfect to get around the city because it's literally couple of minutes of walking to the BTS station.
But what really makes staying here an exceptional experience is the host, Alex. The communication with him is always clear and precise, the check-in process is perfect, he is extremely kind and always available to help if you have any questions.
If I could give more than 5 stars, I would.